Snowplow



April 27, 1943. M. F. FlTzPATRlcK SNOW PLOW Filed June 20, 1942 2Sheets-Sheet l W, Q rl INVEN-roR MICHAEL E FITZPA TR/CK l "fav mATTORNEYS April Z7, 1943.

M. F. FITZPATRICK SNOW PLOW Filed June 20, 1942 2 Sheets-Sheet 2 ATTORNEYS Patented Apr. 27, 1943 UNITED STATES PATENT OFFICE sNowrLow MichaelF. Fiapamk, Brooklyn, N. Y. appucaaonrune zo, 1942, serai No. 447,821

(ci. .3v-42)' 3 Claims.

My invention relates to a snow lplow and more particularly to a snowplow to be carried by a truck or similar vehicle and adjustableangularly relatively to the vehicle.

At the present time, snow plows are often carried at the front of atruck and the truck is moved forward so as to plow or scrape the snow upinto piles for subsequent removal. It is highly advantageous to have aplow which is adjustable angularly to facilitate the plowing of streetsand particularly portions of streets between parked cars.

It is an object of my invention, therefore, to provide a snow plow whichis readily adjustable in an angular direction.

It is another object to provide a simple, sturdy. easily adjustablemeans for changing the angular position of a snow plow.

Other objects and various features of novelty and improvement will behereinafter pointed out or will become apparent to' those skilled in theart.

In the drawings which show, for illustrative purposes only, a preferredfonn of the invention- Fig. 1 is a plan view of a snow plow,illustrating features of the invention, the plow being shown in angularposition;

Fig. 2 is an end View of the plow shown in Fig.

1, the plow being shown in position at right angles to the direction oftravel;

Fig. 314s 'ap secti'onal view similar togli; 2, the

-lw being shown inl angular position as `in Fig. 1;

Fig. 4 is a fragmentary view on an enlarged scale, illustrating adetail;

Fig. 5 is a fragmentary plan view of a pivotal connection to the plowmember; and

Fig. 8 is a fragmentary sectional view, taken substantially in the planeof the line -l of Fig. 3, and illustrating the same parts as Fig. 5 butin different positions.

My improved snow plow is designed to be carried by a truck or similarvehicle, only the front carrying structure of the truck being shown. Anysuitable carrying structure may be attached to or form part of the truckand which for illustration is represented as a sturdy structural steelframework 5. The snow plow is supported by a of pivot bolts 8-8 so thatthe entire support may swing upwardly about a horizontal axis coincidentwith the pivots 8-8.

The plow member, designated generally 9, may be of any desired formsuitable for its purpose. The plow member 9 is movably secured to thesupport so as to permit swinging in an angular direction and preferablyalso a limited tipping. Therefore, one portion of the plow member ispreferably :pivoted directly to the support and is capable of movementrelatively thereto only in an angular and in a tipping direction. Theplow at a point spaced from the support pivot is secured to anadjustable part. In the form shown, such adjustable part is in the formof a bracket I0, which comprises a relatively long, substantial bodyslidable on the way I I of the leg 6 and held in sliding relationthereto as by means of a cap plate I2 secured to the leg 6 and spacedtherefrom so as to provide a housing for slidably holding the bracket I0in place. The bracket I0 is held in various positions of adjustmentrelatively `to the support as by means of a sturdy pin I3 passingthrough an aperture in the bracket I0 and through apertures Il-II in theleg 8 and also in the cap plate I2 in the position of rear adjustment.In the specific form illustrated, the bracket has a depending lug I5which nts between the legs of spaced apart angle irons IG-IS secured tothe back of the plow member.A A pivot 1 pin II may be held in the anglelegs I6 and Y pin I1 so that there 'will be no substantial bindpart ofthe truck or framework 5, preferably on extending legs of angle members6-6 are pref l erably pivoted to the frame part as by means "assesthrough an aperture-1 Bein the lug rv'l'he aperture I8 is preferably 'atloose flt over the pivot ing'no matter whether the plow is in theangular -position shown in Figs. 3 and 6 or in the position shown inFigs. 2 and 5. 'I'hat portion of the plow which is pivotally carried onthe support at the end opposite the adjustable end may be supported fromthe support by means such as a pin which could be a duplicate of the pinI'I. Thus, the connection of the Iplow member -9 to the support and tothe bracket III is such as to permit the swinging or angular positioningof the plow member relatively to the support and so as to permit tippingof the plow member about a horizontal axis defined by the pin or pinsII.-

To further support the plow, the bracket Ill` may have an upstanding armor lug I9, which serves as an abutment or support for the upper `portionof the plow member 9. The upper porltion of the plow member may carry apair of upstanding lug or arm I9. Upper and lower bearing plates 22--22are secured to the .straps 2| between the yoke arms 20. A pivot pin 23extends down through the yoke arms and through the plates 22, thuspivotally securing the plow to the strap 2 I. A sturdy compressionspring 24 is interposed between the bottom of the U-strap 2| and thehead 25 of abolt or other holding means passing through the bottom ofthe strap 2| and the upstanding arm I9. A head or nut 26 on the bolt mayilt in 'a counterbore in the arm I9. When the plow is tipped about thehorizontal axis represented by the pivot pins I1, the strap 2| will bepulled away from the arm I9, against the resistance of the compressionspring 24. A part adjacent the opposite end of the plow may be providedwith a resilient tip-permitting mechanism identical with that justdisclosed, except that instead oi having the U-strap 2| abutting againstan adjustable bracket arm I9. the strap may abut against any suitableabutment such as an angle iron 21, which serves also as an abutment forthe head or nut on a bolt passing through the center of a spring, all aswill be understood.

It will be seen that, when it is desired to move the plow member fromthe right angular position, as shown in Fig. 2 and in dot-dash lines inFig. 1, to the angular position shown in full lines in Fig. 1 and inFig. '3, it is only necessary to remove the pin I3 and swing the plow tothe desired adjusted angular position. The pin I3 is then replaced indiierent holes so as to hold the bracket and the plow in such adjustedposition. The plow may tip slightly (as when striking an obstruction inthe street) no matter whether it is in angularly adjusted position or inthe right angular position.

'I'he entire plow and support assembly is preferably arranged to beraised as a unit during such times as the plow is not in use. In theform shown, the support is provided with upstanding lugs 28-28. Thetruck frame part 5 may carry at opposite sides hydraulic jack cylinders29-29, plvotally secured thereto, as at 3U. The piston rod 3| of eachjack may carry xed heads or washers 32-32, the relative positions ofwhich may be adjustedas by means of a nut 33 screwed on the end of therod 3|. A pivot sleeve 34 slidable on the rod is located between thewashers 32-32 and resiliently held between such Washers as by means of apair of compression springs 35-35. Each pivot sleeve 3l is pivotallysecured, as by means of a pin 36, to the pivot lugs 2B on the plowsupport, as will be understood. Thus, during normal operation, theentire plow and play so that the piston rod 32 is retracted into thecylinder, thus raising the entire plow and support assembly.

While the invention has been described in considerable detail and apreferred form illustrated, it is to be understood that various changesmay be made within the scope of the invention as defined in theppendedclaims.

I claim:

1. In a device of the character indicated, a

support, a plow member, means for pivotally supporting a lower part ofsaid plow member on said support for movement about a vertical axis,resilient means connecting said support and said plow member at a pointabove said lower part, an adjustable bracket member carried by saidsupport, means for holding said bracket member in various positions ofadjustment on said support, means for movably securing said brackettosaid plow member at a lower part of the latter, and means for securingsaid bracket to an upper part of said plow member, for the purposedescribed.

2. In a device of the character indicated, a support, a plow member,means for. movably securing said plow member to said support to permitangular movement of said plow member relatively to said support, abracket adjustably carried by said support, means for holding saidbracket in various positions of adjustment on saidsupport, means forpivotally seeming a lower portion of said plow member to said bracket,an upstanding ann on said bracket, and means for resiliently securing anupper part of said plow member to said upstanding arm on said bracket.

3. In a device o1' the character indicated, a support, means forpivotally carrying said support on a truck for swinging about ahorizontal axis, a plow member, means for resiliently securing said plowmember and support to each other, a bracket adjustably carried by saidsupport, means for securing said bracket in various positions ofadjustment on said support, means for resiliently securing saidbracketto said plow member, and means for resiliently supporting said supportand plow member carried thereby in operative position.

MICHAEL F. FITZPA'I'RICK.

